getting started: update minimum required go to 1.18

Author: dkegel-fastly

content/getting-started/install/linux.md

@@ -23,7 +23,7 @@ If you wish to build TinyGo from source, for example if you intend to contribute
 
 ### Ubuntu/Debian
 
-You must have Go already installed on your machine in order to install TinyGo. We recommend Go v1.17 or above.
+You must have Go already installed on your machine in order to install TinyGo. We recommend Go v1.18 or above.
 
 If you are using Ubuntu or another Debian based Linux on an Intel processor, download the DEB file from Github and install it using the following commands:
 

content/getting-started/install/macos.md

@@ -9,7 +9,7 @@ description: >
 
 This page has information on how to install and use TinyGo on macOS. If you wish to build TinyGo from source, for example if you intend to contribute to the project, please take a look [here](../../../docs/guides/build).
 
-You must have Go v1.16+ already installed on your machine in order to install TinyGo. We recommend Go v1.17+.
+You must have Go v1.18+ already installed on your machine in order to install TinyGo.
 
 You can use Homebrew to install TinyGo using the following commands:
 

content/getting-started/install/windows.md

@@ -9,7 +9,7 @@ description: >
 
 This page has information on how to install and use TinyGo on Windows 10. If you wish to build TinyGo from source, for example if you intend to contribute to the project, please take a look [here](../../../docs/guides/build).
 
-TinyGo requires Go v1.16+ to be already installed on your machine.
+TinyGo requires Go v1.18+ to be already installed on your machine.
 
 ### Quick Install via Scoop
 
@@ -61,7 +61,7 @@ Upgrading to the latest versions can be as easy as:
 
 ### Manual Install
 
-- You MUST use Go 1.16.x+ with the Windows 10 native install of TinyGo.
+- You MUST use Go 1.18.x+ with the Windows 10 native install of TinyGo.
 
     - If you have not installed it yet, you can get it from https://golang.org/dl/